Big EOFY Savings on Cat Compact machines until 30 June 2026. T&Cs apply. View Promotion

Big EOFY Savings on Cat Compact machines until 30 June 2026. T&Cs apply. View Promotion

M318 Wheel Excavator equipped with a hammer

M318

Wheel Excavators
The Cat® M318 Wheel Excavator helps provide top performance with high swing torque, featuring versatility with Cat tiltrotator (TRS) integration and advanced hydraulics. Long service intervals and 100 percent daily ground level check, help save time and money with less maintenance costs. The M318 helps give you the power to work long while keeping money in your pocket.
Engine Power - ISO 14396
174 hp/129 kW
Engine Power - ISO 14396 (DIN)
176 hp (metric)/176 hp (metric)
Engine Model
Cat® C4.4
Net Power - ISO 9249
171 hp/128 kW

Key Features

Specifications

Metric | Imperial
Engine Expand Collapse
Engine Power - ISO 14396
174 hp 129 kW
Engine Power - ISO 14396 (DIN)
176 hp (metric) 176 hp (metric)
Engine Model
Cat® C4.4
Net Power - ISO 9249
171 hp 128 kW
Net Power - ISO 9249 (DIN)
174 hp (metric) 174 hp (metric)
Bore
4.1 in 105 mm
Stroke
5 in 127 mm
Displacement
268.5 in³ 4.4 l
Biodiesel Capability
Up to B20¹
Emissions
Meets U.S. EPA Tier 4 Final, EU Stage V, and Korea Stage V emission standards.
Note (1)
Net power advertised is the power available at the flywheel when the engine is equipped with fan, air cleaner, Clean Emission Module (CEM) exhaust gas aftertreatment, alternator, and cooling fan with engine speed at 2,200 rpm. Advertised power is tested per the specified standard in effect at the time of manufacture.
Note (2)
¹Cat diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) and are compatible* with ULSD blended with the following lower-carbon intensity fuels** up to: 20% biodiesel FAME (fatty acid methyl ester)*** or 100% renewable diesel, HVO (hydrotreated vegetable oil) and GTL (gas-to-liquid) fuels. Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details. *While Caterpillar engines are compatible with these alternative fuels, some regions may not allow their use. **Tailpipe greenhouse gas emissions from lower-carbon intensity fuels are essentially the same as traditional fuels. ***Engines with no aftertreatment devices are compatible with higher blends, up to 100% biodiesel (for use of blends higher than 20% biodiesel, consult your Cat dealer).
Maximum Travel Speed
21.7 mile/h 35 km/h
Main System - Maximum Flow - Implement
67 gpm 254 L/min
Maximum Pressure - Implement Circuit - Normal
5076 psi 35000 kPa
Maximum Pressure - Implement Circuit - Heavy Lift
5366 psi 37000 kPa
Maximum Pressure - Implement Circuit - Travel Circuit
5076 psi 35000 kPa
Maximum Swing Speed*
9.4 r/min 9.4 r/min
Maximum Swing Torque
34739 lbf·ft 47.1 kN·m
Note (1)
Net power advertised is the power available at the flywheel when the engine is equipped with fan, air cleaner, Clean Emission Module (CEM) exhaust gas aftertreatment, alternator, and cooling fan with engine speed at 2,200 rpm. Advertised power is tested per the specified standard in effect at the time of manufacture.
Operating Weight Maximum
43980 lb 19950 kg
Operating Weight Minimum
37700 lb 17100 kg
Note (1)
Net power advertised is the power available at the flywheel when the engine is equipped with fan, air cleaner, Clean Emission Module (CEM) exhaust gas aftertreatment, alternator, and cooling fan with engine speed at 2,200 rpm. Advertised power is tested per the specified standard in effect at the time of manufacture.
Fuel Tank
92.5 gal (US) 350 l
Diesel Exhaust Fluid (DEF)
5.3 gal (US) 20 l
Cooling System
8.5 gal (US) 32 l
Hydraulic Tank
31.7 gal (US) 120 l
Hydraulic System - Including Tank
68.7 gal (US) 260 l
Boom
Variable Adjustable Boom 5.2 m (17'1")
Stick
2.5 m (8' 2")
Bucket
GD 0.91 m³ (1.19 yd³)
Shipping Height - Top of Cab
11 ft 3360 mm
Shipping Length
27.4 ft 8360 mm
Support Point
10.1 ft 3090 mm
Tail Swing Radius
7.7 ft 2350 mm
Counterweight Clearance
4.3 ft 1300 mm
Ground Clearance
1.1 ft 325 mm
Undercarriage Length
16.6 ft 5050 mm
Wheel Base
8.9 ft 2700 mm
Boom
Variable Adjustable Boom 5.2 m (17'1")
Stick
2.5 m (8' 2")
Bucket
GD 0.91 m³ (1.19 yd³)
Maximum Cutting Height
33.7 ft 10260 mm
Maximum Loading Height
24 ft 7300 mm
Maximum Digging Depth
19.3 ft 5890 mm
Maximum Vertical Wall Digging Depth
15.1 ft 4600 mm
Maximum Reach at Ground Line
30.2 ft 9210 mm
Stick Forces (ISO)
16861 lbf 75 kN
Bucket Forces (ISO)
26752 lbf 119 kN
Note (1)
Net power advertised is the power available at the flywheel when the engine is equipped with fan, air cleaner, Clean Emission Module (CEM) exhaust gas aftertreatment, alternator, and cooling fan with engine speed at 2,200 rpm. Advertised power is tested per the specified standard in effect at the time of manufacture.
Note
The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a or R1234yf. See the label or instruction manual for identification of the gas. If equipped with R134a (Global Warming Potential = 1430), the system contains 1.0 kg (2.2 lb) of refrigerant which has a CO2 equivalent of 1.430 metric tonnes (1.576 tons). If equipped with R1234yf (Global Warming Potential = 0.5), the system contains 0.8 kg (1.8 lb) of refrigerant which has a CO2 equivalent of 0.0004 metric tonnes (0.0004 tons).
Recyclability
92%

Equipment

Compatible Attachments

Impulse Force
16508.0 lb/74.0 kN
Cycles/Minimum
2200
Machine Class
14-19 ton Excavators
Weight
1,406 lb/638 kg
Cycle Time - Open
1.8 s/1.8 s
Cycle Time - Close
1.2 s/1.2 s
Minimum Carrier Weight
15 ton (US)/15 ton (US)
Maximum Carrier Weight
18 ton (US)/18 ton (US)
Blows per Minute
370 to 800
Minimum Operating Weight
2354 lb/1070 kg
Blows per Minute
350 to 620
Minimum Operating Weight
3256 lb/1480 kg
Blows per Minute
450 to 1000
Minimum Operating Weight
2090 lb/950 kg
Motor
Variable Torque Hydraulic Piston Motor
Overall Width
73.0 in/1856 mm
Motor
Variable Torque Hydraulic Piston Motor
Overall Width
74.0 in/1871 mm
Motor
Variable Torque Hydraulic Piston Motor
Overall Width
77.6 in/1871 mm
Width
42 in/1050 mm
Capacity
1 yd³/0.76 m³
Width
48 in/1200 mm
Capacity
1.19 yd³/0.91 m³
Width
48 in/1200 mm
Capacity
1.19 yd³/0.91 m³
Width
24 in/600 mm
Capacity
0.46 yd³/0.35 m³
Width
36 in/900 mm
Capacity
0.81 yd³/0.62 m³
Blows per Minute
450 to 650
Minimum Operating Weight
2599 lb/1179 kg
Blows per Minute
450 to 800
Minimum Operating Weight
3098 lb/1405 kg
Width
72 in/1800 mm
Capacity
1.02 yd³/0.78 m³
Grapple Area
0.49 yd³/375 l
Weight
2337 lb/1060 kg
Grapple Area
0.72 yd³/550 l
Weight
2888 lb/1310 kg
Grapple Area
0.78 yd³/600 l
Weight
2917 lb/1323 kg
Width
60 in/1500 mm
Capacity
1.62 yd³/1.24 m³
Width
72 in/1800 mm
Capacity
2 yd³/1.53 m³

Similar Products

Engine Model
Cat C4.4
Engine Power - Maximum Net - ISO 9249/SAE J1349 - Metric
112 kW (150 hp/152 PS)
Engine Power - ISO 14396
134 hp/100 kW
Engine Power - ISO 14396 (DIN)
136 hp (metric)/136 hp (metric)
Engine Power - ISO 14396
148 hp/110 kW
Engine Power - ISO 14396 (DIN)
150 hp (metric)/150 hp (metric)
Engine Power - ISO 14396
148 hp/110 kW
Engine Power - ISO 14396 (DIN)
150 hp (metric)/150 hp (metric)
Engine Power - ISO 14396
174 hp/129 kW
Engine Power - ISO 14396 (DIN)
176 hp (metric)/176 hp (metric)
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